Tolerance of upland rice genotypes to water deficit.
Autor(a) principal: | |
---|---|
Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/961085 |
Resumo: | Water deficit is one of the environmental factors that cause a great reduction in the upland rice grain yield. The objective of this study was to evaluate genotypes of upland rice with broad genetic diversity for tolerance to this stress and to identify secondary traits for evaluation of this tolerance. Sixty-four genotypes were evaluated during two years at the Experiment Station of EMATER, in Porangatu, GO, under well-watered and water deficit conditions. The genotypes showed differences in grain yield and were influenced differently by the water treatments, both under a mild water deficit in the first year and under a severe one in the second year. The genotype grain yield under water deficiency was significantly and positively correlated with tiller fertility, number of panicles m-2, 100-grain weight, and plant height, and negatively with spikelet sterility and the number of days for the occurrence of 50% panicle emergence. It was also observed that the most productive genotypes under water deficit conditions showed lower leaf temperature, indicating improved water status. Nine genotypes were productive in both water conditions and three were productive only when well-watered. |
id |
EMBR_dbf2ef2ef0111a6ccbcffc71b0307520 |
---|---|
oai_identifier_str |
oai:www.alice.cnptia.embrapa.br:doc/961085 |
network_acronym_str |
EMBR |
network_name_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository_id_str |
2154 |
spelling |
Tolerance of upland rice genotypes to water deficit.ArrozOryza sativaIrrigaçãoDeficiência hídricaTemperaturaWater deficit is one of the environmental factors that cause a great reduction in the upland rice grain yield. The objective of this study was to evaluate genotypes of upland rice with broad genetic diversity for tolerance to this stress and to identify secondary traits for evaluation of this tolerance. Sixty-four genotypes were evaluated during two years at the Experiment Station of EMATER, in Porangatu, GO, under well-watered and water deficit conditions. The genotypes showed differences in grain yield and were influenced differently by the water treatments, both under a mild water deficit in the first year and under a severe one in the second year. The genotype grain yield under water deficiency was significantly and positively correlated with tiller fertility, number of panicles m-2, 100-grain weight, and plant height, and negatively with spikelet sterility and the number of days for the occurrence of 50% panicle emergence. It was also observed that the most productive genotypes under water deficit conditions showed lower leaf temperature, indicating improved water status. Nine genotypes were productive in both water conditions and three were productive only when well-watered.CLEBER MORAIS GUIMARAES, CNPAF; LUIS FERNANDO STONE, CNPAF; PAULO HIDEO NAKANO RANGEL, CNPAF; ANA CLAUDIA DE L. SILVA, doutoranda UNESP.GUIMARÃES, C. M.STONE, L. F.RANGEL, P. H. N.SILVA, A. C. de L.2013-07-02T11:11:11Z2013-07-02T11:11:11Z2013-07-0220132013-07-02T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRevista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 17, n. 8, p. 805-810, 2013.http://www.alice.cnptia.embrapa.br/alice/handle/doc/961085enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-15T23:45:14Zoai:www.alice.cnptia.embrapa.br:doc/961085Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-15T23:45:14falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-15T23:45:14Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Tolerance of upland rice genotypes to water deficit. |
title |
Tolerance of upland rice genotypes to water deficit. |
spellingShingle |
Tolerance of upland rice genotypes to water deficit. GUIMARÃES, C. M. Arroz Oryza sativa Irrigação Deficiência hídrica Temperatura |
title_short |
Tolerance of upland rice genotypes to water deficit. |
title_full |
Tolerance of upland rice genotypes to water deficit. |
title_fullStr |
Tolerance of upland rice genotypes to water deficit. |
title_full_unstemmed |
Tolerance of upland rice genotypes to water deficit. |
title_sort |
Tolerance of upland rice genotypes to water deficit. |
author |
GUIMARÃES, C. M. |
author_facet |
GUIMARÃES, C. M. STONE, L. F. RANGEL, P. H. N. SILVA, A. C. de L. |
author_role |
author |
author2 |
STONE, L. F. RANGEL, P. H. N. SILVA, A. C. de L. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
CLEBER MORAIS GUIMARAES, CNPAF; LUIS FERNANDO STONE, CNPAF; PAULO HIDEO NAKANO RANGEL, CNPAF; ANA CLAUDIA DE L. SILVA, doutoranda UNESP. |
dc.contributor.author.fl_str_mv |
GUIMARÃES, C. M. STONE, L. F. RANGEL, P. H. N. SILVA, A. C. de L. |
dc.subject.por.fl_str_mv |
Arroz Oryza sativa Irrigação Deficiência hídrica Temperatura |
topic |
Arroz Oryza sativa Irrigação Deficiência hídrica Temperatura |
description |
Water deficit is one of the environmental factors that cause a great reduction in the upland rice grain yield. The objective of this study was to evaluate genotypes of upland rice with broad genetic diversity for tolerance to this stress and to identify secondary traits for evaluation of this tolerance. Sixty-four genotypes were evaluated during two years at the Experiment Station of EMATER, in Porangatu, GO, under well-watered and water deficit conditions. The genotypes showed differences in grain yield and were influenced differently by the water treatments, both under a mild water deficit in the first year and under a severe one in the second year. The genotype grain yield under water deficiency was significantly and positively correlated with tiller fertility, number of panicles m-2, 100-grain weight, and plant height, and negatively with spikelet sterility and the number of days for the occurrence of 50% panicle emergence. It was also observed that the most productive genotypes under water deficit conditions showed lower leaf temperature, indicating improved water status. Nine genotypes were productive in both water conditions and three were productive only when well-watered. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-07-02T11:11:11Z 2013-07-02T11:11:11Z 2013-07-02 2013 2013-07-02T11:11:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 17, n. 8, p. 805-810, 2013. http://www.alice.cnptia.embrapa.br/alice/handle/doc/961085 |
identifier_str_mv |
Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 17, n. 8, p. 805-810, 2013. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/961085 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
_version_ |
1794503379862421504 |